CN201753918U - Heat energy apparatus for making superheated steam by exhaust heat gas - Google Patents

Abstract

Provided is a heat energy apparatus for making superheated steam by exhaust heat gas which effectively solves the problems of prior art drying lignite, such as uneconomic, ignition and blast. The heat energy apparatus herein comprises a baffle wall, a base, a heat exchanging part, a upper independent smoke box, a lower independent smoke box, an upper connecting body smoke box and a lower connecting body smoke box, wherein the heat exchanging part is provided with a low temperature heat exchanging area, a middle temperature heat exchanging area and a high temperature heat exchanging area which are constituted by tube-bank type heat and mass exchangers, the lumen of the tube-bank type heat and mass exchanger of each heat exchanging area being communicated respectively with the inner chambers of the upper and lower independent smoke boxes and the inner chambers of the upper and lower connecting body smoke boxes, the upper and lower tube plates of each tube-bank type heat and mass exchanger of the heat exchanging areas being provided with a plurality of pipe gaps which are in staggered arrangement so as to form a communicating chamber, the communicating chamber of the low temperature heat exchanging area being connected to a conveying tube for exhaust heat gas, the communicating area of the high temperature heat exchanging area being connected to the supplying tube for superheated steam. The utility model has the advantages of rational structure and design, stable performance, easy maintenance, low running cost, energy saving, consumption reduction, emission reduction, and wide application. The utility model can reduce onetime investment in drying lignite.

Description

Heat energy apparatus with preparing superheated steam with waste heat steam

Technical field

The utility model relates to a kind of normal pressure heat energy apparatus, particularly a kind of heat energy apparatus with preparing superheated steam with waste heat steam, it is mainly used in the heat energy apparatus that conduct in " with the brown coal drying and upgrading technology of preparing superheated steam with waste heat steam " (the applying for a patent separately) of inventor design provides heat transferring medium, utilizes that it is inflammable to brown coal etc., explosive material carries out the drying and dehydrating upgrading.This heat energy apparatus is not a steam boiler, but can produce the superheated steam that compares favourably with steam boiler, belong to energy-saving consumption-reducing reduction of discharging, Eco-power heat energy equipment, it also can be flesh of fish based food industry, cake food industry, fruits and vegetables industry, grain industry, pharmaceutical sector, chemical industry, light industry and the contour moisture dry materials dehydration of army's industry heat supply, and the scope of application is extensive.

Background technology

China's lignite resource reserves are abundant, and fat coal scarcity of resources such as bituminous coal and anthracite after high-moisture wet basis brown coal have only drying and upgrading, could widely be utilized.For this reason, domestic enterprises such as coal mining, coalification industry, moulded coal industry, town gas industry and power plant adopt the dry brown coal of all kinds of drying equipments one after another.Its capital equipment has: individual layer roller drier, disc type drying machine, vertical crossing current drying machine, vibrating dryer, fluid bed dryer and mesh-belt drier or the like, but can realize the less of high precipitation ability, all have a lot of technical problems and defective workmanship.Through relatively: use by thermal medium and to classify: use more or by mainly containing that market is paid close attention to: (one) individual layer roller drier; (2) steam heat-conducting rotary drum dryer; (3) superheated steam pyrolysis formula fluid bed dryer or the like.Report according to patent documentation: publication number is " a kind of coal slime, the brown coal drying and upgrading Processes and apparatus " of CN101519617A, and the front portion of device therefor is the feed and the material guide device of scraper feeder coupling, and the middle part is a drying machine, and the rear portion is the discharging discharge device.Material relies on the rotation lifting displacement or the motion of main drying angle of inclination and cylinder in the past backward, and material drying system feeds high-temperature flue gas, and the heat exchange of constant speed matter is quickened in the following current in main drying of flue gas and material.Its main drying is existing individual layer roller drier, and horizontal 3-8 ° is tilted to put, with endwisely slipping of the spacing large-size cylinder body of shelves wheel, circumferentially rotation 1-6r/min.Because tilt to put, gear is easy to wear, the difficulty of upset commutation can be bigger, and high temperature 550-720 ℃ of protection that is unfavorable for volatile matter is influential to the security of equipment.Medium and brown coal are concurrent drying in the same way, and what high-temperature medium at first contacted is the high humidity low-temperature material, and when the approaching dry coda stage, the wet ability of carrying of medium weakens, and what the medium of high moisture content contacted at last is dry coal after the baking, and absorption will be inevitable greater than desorb.Therefore the precipitation ability is low, and the calorific value increasing degree is little after the brown coal upgrading, the volatile matter considerable damage, and the temperature that scavenges height easily burns sack cleaner, learns according to reports, and the thermal efficiency is 30-50%.Adopt wet dedusting, artificial again generation sewage increases the environmental protection treatment difficulty, is a kind of technology of demanding improving raising urgently.At present, more influential in the international market is foreign heat-conducting rotary drum dryer, this technology is by the tube sheet Welding Structure at some steel pipes and two ends, the outer cover steel plate is clappers, in the clappers shell is steam channel, in the steel pipe (φ 50-150mm) is the brown coal drying important channel, effect, the circumferential rotation of rotary drum 4-15r/min, spiral guide plate realization material displacement dependence steel pipe in, the turnover material of brown coal in the rotary drum at horizontal 7-20 ° inclination angle, by gearing; Steam pressure is lower, is generally 4 crust, and temperature≤180 ℃ can play a protective role really to the volatile matter of brown coal.But it is for high-moisture wet basis brown coal, and the phenomenon that blocks of guide not can often appear in the spring guide plate in the tube bank, causes equipment to stop production, and maintenance needs to extract out spring guide plate, dredging pipeline, comparatively trouble.Aixal admission valve precision prescribed is higher in addition, needs supporting special-purpose steamer stove to make thermal source, and its one-time investment is bigger, the plant maintenance amount is also bigger, maintenance cost height, operating cost height, still can not be accepted by market fully, also should be to demand the product that improves and improve urgently.Publication number be CN101519614A's " a kind of water brown coal drying moulding process for upgrading that is rich in ", be exactly drum dried technology on this basis, just on the granulation link, increase new corollary equipment, but still have the problems referred to above and defective.Publication number be CN101260307A's " a kind of brown coal drying and upgrading device and process " its be medium with the superheated steam, adopt fluidized bed drying device, pyrolysis formula drying.Equipment therefor comprises brown coal locellus drying device, fluidized bed pyrolysis device, pyrolysis gas burner and servicing unit thereof.Enter pyrolysis installation and separate out volatile matter and product liquid through dried brown coal, volatile matter is sent into the burner burning, and producing flue gas and steam, flue gas and part steam, to be admitted to drying device interior as drying medium.All the other steam are admitted to the heat energy thermal source are provided in the heat energy apparatus, and drying device adopts the portable mass transport mode of chain, the dry and eliminating of flue gas and steam locellus.The steam of 300-500 ℃ of this arts demand high-temperature and elevated pressures, volatile matter is the important indicator of Coal Chemical Industry examination in the brown coal, and this technology is through pyrolysis drying, and a large amount of volatile matters disengage and send into combustion chambers burn in the brown coal, and volatile matter is just burnt in the upgrading process, and some is unfortunate.Oven dry back brown coal can only be used for as electric coal and thermal coal, and Sales Channel narrows down, and purposes is restricted, and price also can be influenced.Publication number CN101581532A " multiple-effect superheated steam brown coal drying system and technology thereof ", it comprises the multi-stage drying device of series connection, wherein every grade of drying device is equipped with feeding device, drawing mechanism reaches one-level dust arrester at least, the dust arrester end is sent a part of tail gas back to drying device at the corresponding levels by pressue device, and another part tail gas is sent into the next stage drying device as thermal source; Wherein, the one-level drying device is connected with steam source, and the dust arrester of final stage drying device is sent a part of tail gas back to drying device at the corresponding levels by pressue device, the emptying of another part tail gas.This process using multistage fluidized bed drying machine and the multistage dust arrester of forming by the cyclone dust collectors and the electric cleaner of plural serial stage, multistage internal heating fluidized bed drying machine serial operation, the weary gas that the first order produced is used as partial heat medium after dedusting, partial weary gas after dedusting as the heat medium of the third level, the whole return boilers of condensed water utilize again, steam boiler is the main thermal source of this technology, and system equipment repeats the technology more complicated is set.

At present, high pressure steam boiler mainly contains upper drum, lower drum, and is middle by the connection of water-cooling wall steel pipe, retaining in drum and the water-cooling wall, and drum and pipe are outer to be flame zone.By the flame baking pan pipe, utilize the mode of conduction heat that working medium is heated, make aqueous water become vapourous water, saturated vapor becomes superheated steam again, and boiler is subjected to high compressive load, belongs to pressure vessel.Therefore, one-time investment is big; Boiler plant is wanted periodic inspection, the maintenance cost costliness.Water must could use after treatment, and exhaust gas temperature is up to 150-210 ℃, and the operating cost height is to strictness of demanded fuel.

In " industrially drying equipment commonly used and application " (Chemical Industry Press) the 14th chapter hot-blast stove, the existing heat exchanger of introduction mainly contains: (one), transverse tube type hot-blast stove heat exchanger, its fire tube adopts vertical arranged crosswise.Three layers at the end is a cast iron pipe, more than each layer be sheet steel pipe, diameter of steel tube is big down for a short time, walks air hose in the pipe and walks pyrotechnics outward, is flame direct baking formula.Pipe burns easily, and in extremely short 500 hours life-span, the heat exchange air themperature is low to be no more than 150 ℃.(2), vertical pipe type hot-blast stove heat exchanger, the all-metal full-enclosed structure.This heat exchanger lower perforated plate is fixed, and upper perforated plate and pipe are the active open formula, behind the expanded by heating, together with heat exchanger core, can freely stretch.Rely on smoke suction machine high negative pressure absolute value much larger than hot-air blower fan negative pressure absolute value, can guarantee that cigarette does not enter in the air, but the air of heat exchange there is the possibility of partly being taken away together in company with flue gas, is should be improved.(3), shell and tube hot-blast stove heat exchanger, the high-temperature flue gas that chain type Combustion of Hot Air Furnace bituminous coal produces purifies through expansion chamber and enters in the Tube Sheet of Heat Exchanger, with the heat exchange of three backhauls, the outer air heat exchange of replace tubes is given up flue gas through the smoke suction machine emptying, and hot-air is supplied with drying machine by air-introduced machine.Heat exchanger in on-the-spot the use mostly is face arch brick parcel steel tubulation structure, and two sides and arch mostly are brick masonry structure.Produce the stress modification for preventing that heat exchanger is heated, be provided with half meter high stainless steel tube, the elastic expansion joint of making of steel plate is housed on first group of high-temperature heat pipe top.So-called expansion joint is actually increases a pair of tube sheet, and following steel pipe also is provided with a pair of tube sheet, and trouble is manufactured in tube chamber centering assembling up and down, waste material and man-hour again, and the bad processing of four limit connection ports.Refractory brick is asynchronous with heat exchanger stress modification, and leaking out is inevitable, and also is to demand the technology improving and improve urgently.The patent publication No. be CN101776371A's " the superheated steam rotary drying of brown coal and the method for the indirect rotary drying of steam tail gas ", it adopts two kinds of rotary dryers, attempt to realize the recycling of heat and reclaim with the method for two-stage drying, but because of its technical flow design unreasonable, the first is divided into two the tunnel from the superheated steam that the whirlwind separator comes out, one the tunnel enters the indirect type rotary dryer, another road enters direct rotary dryer, two kinds of drying modes, two kinds of methods of operating, technological process is cumbersome, equipment repeats to be provided with, and has increased management difficulty; It two is that the steam that cyclone separator comes out should not be superheated steam, and the condensation heat of water vapour does not generally have the value of reuse again; It three is that uncooled vapour and fixed gas enter out steam chest upper pipe admission liquid scrubbing tower in the heating tube of indirect type rotary dryer, is washed cooling and has caused new waste again.

The problem that the inventor once existed at above-mentioned drying equipment, designing notification number is " double return journey barrel type drying machines " of CN100573003C and " three return journey barrel type drying machines " that notification number is CN100570253C.Its potential potential energy that makes full use of " heat " and " wetting " two kinds of motions of matter is power; adopt the design feature of " multiple-unit ", " multi-cavity body ", " many backhauls "; with new technologies such as " suitable, the countercurrent heat-transfer of many backhauls ", " low temperature dryings "; make the brown coal volatile matter be subjected to protecting effectively, solved that brown coal drying catches fire and blast, volatile matter run off, the precipitation ability is low, the thermal efficiency lowly reaches problems such as one-time investment expense height, operating cost height.Through facts have proved, this technomania efficient height (greater than 81%), unit hydro-thermal consumption index is low (less than 1182kcal/kgH ₂O), a precipitation range big (more than 50%), dehydration rate height (being 69-83%), (wet basis brown coal low heat valve is 3100kcal/kg to drying and upgrading rate height, baking back coal low heat valve can reach 5500kcal/kg, and its drying and upgrading rate is 77.42%, can realize the lifting of brown coal quality fully).

In addition, for many years,,, but do not have good way to be reclaimed, waste emptying although all be subjected to people's great attention always to the 110-130 ℃ of used heat gas that produces in the dry run.This had both caused the loss of the energy, had increased greenhouse effects again, had also strengthened user's production cost, became a difficult problem that needs to be resolved hurrily in the industry.The above-mentioned high pressure steam boiler of superheated steam that provides needs regular annual test, maintenance cost height, operating cost height, and one-time investment is big.Therefore, it is uneconomical to be used as the thermal source of brown coal drying with the boiler for producing superheated steam.Though adopt high-temperature flue gas economical as the thermal source of brown coal drying, catch fire and problem such as hidden peril of explosion but exist, be not easy good or accept by the international market.

The utility model content

The purpose of this utility model provides a kind of heat energy apparatus with preparing superheated steam with waste heat steam, it is uneconomical as thermal source with the boiler for producing superheated steam that it has solved dry brown coal effectively, though economical as thermal source, but there is the problem of catching fire with hidden peril of explosion with high-temperature flue gas; Its reasonable in design, stable performance safeguards that operating cost is low easily, has energy-conservation, consumption reduction, reduces discharging, the characteristics that have wide range of applications are used for dry brown coal and can make the technology smoothness, reduce maintenance cost and one-time investment.

The technical scheme that the utility model adopted is: the heat energy apparatus of this usefulness preparing superheated steam with waste heat steam comprises partition wall is set, the following independent body smoke box that has useless exhanst gas outlet reaches the pedestal of disjunctor smoke box down, be fixed on the heat exchange portion of pedestal top, the last independent body smoke box of gas approach and arch form flue is set and goes up the disjunctor smoke box, its technical essential is: the low-temperature heat exchange district that is made of the bundled tube heat and mass exchanger is set between the two sides heat insulation wall of described heat exchange portion, in warm heat transfer zone and high temperature heat transfer zone, the described inner chamber of going up the independent body smoke box is communicated with the tube chamber at the bundled tube heat and mass exchanger top of described high temperature heat transfer zone, the tube chamber of the bundled tube heat and mass exchanger of described high temperature heat transfer zone bottom by disjunctor smoke box down be communicated with described in the tube chamber of bundled tube heat and mass exchanger bottom of warm heat transfer zone, the tube chamber at the bundled tube heat and mass exchanger top of warm heat transfer zone is communicated with the tube chamber at the bundled tube heat and mass exchanger top in low-temperature heat exchange district in described by last disjunctor smoke box, the tube chamber of the bundled tube heat and mass exchanger bottom in low-temperature heat exchange district is communicated with the inner chamber of following independent body smoke box, described heat exchange portion low, in, on the described bundled tube heat and mass exchanger of high temperature heat transfer zone, parallel staggered tube bank gap between the lower perforated plate forms connected chamber, import is connected used heat gas carrier pipe with the used heat gas by collecting and distributing cover in the outer end of the connected chamber in described low-temperature heat exchange district, and outlet is connected the superheated steam supply pipe with superheated steam by assembling cover in the outer end of the connected chamber of described high temperature heat transfer zone.

The two sides heat insulation wall of described heat exchange portion is to be made of internal layer wallboard, outer colored steel and the high heat preserving and insulating material that is laid on inside and outside interlayer.

Described upward independent body smoke box reaches upward, and the disjunctor smoke box is formed by the end envelope heat insulation wall of semi-cylindrical shaped heat insulation wall and both sides and the upper perforated plate encapsulation of described bundled tube heat and mass exchanger respectively.

It is to be made of inside panel, exterior panel and the high heat preserving and insulating material that is laid between inside and outside wallboard that the described semi-cylindrical shaped heat insulation wall of going up independent body smoke box and last disjunctor smoke box and end seal heat insulation wall.

Described down independent body smoke box and down the disjunctor smoke box form by pedestal inner chamber that partition wall is set and the lower perforated plate encapsulation that has concrete collar tie beam, lintel and a described bundled tube heat and mass exchanger of built-in fitting respectively.

Parallel vertically distribution and staggered logical heart steel pipe of arranging are adopted in parallel staggered tube bank between the upper and lower tube sheet of described bundled tube heat and mass exchanger, and the pore that passes upper and lower tube sheet respectively carries out the end sealing-in, makes the upper and lower perforation of tube chamber of the top and bottom of described bundled tube heat and mass exchanger.

Advantage and the good effect that the utlity model has are: because heat energy apparatus of the present utility model is to utilize the used heat gas, the heat exchange portion that constitutes by the low-temperature heat exchange district that is made of the bundled tube heat and mass exchanger, middle temperature heat transfer zone and high temperature heat transfer zone carries out caloic exchange fully, preparation is as the superheated steam of thermal source, so it becomes the waste resource recycling, and make it promote heat transmission equipment for the superheated steam that application prospect is arranged most.Particularly use its feedway as the drying medium of brown coal, operation is safer, it is uneconomical as thermal source with the boiler for producing superheated steam to have solved dry brown coal effectively, though economical with high-temperature flue gas as thermal source, but have the problem of catching fire with hidden peril of explosion.Because of the utility model is to utilize used heat gas that drying machine discharges in the dry run drying medium as the caloic exchange, the temperature high starting point of used heat gas, priming speed is fast, programming rate is fast, process is simple and direct, power consumption is few, so its reasonable in design, stable performance is safeguarded easily, is used for dry brown coal and can makes the technology smoothness, reduce operating cost, reduce maintenance cost and one-time investment.Practice examining shows, this heat energy apparatus if with the inventor's " double return journey barrel type drying machines ", " three return journey barrel type drying machines " and patented technologies such as " energy efficient cylinder type brown coal drying and upgrading devices ", supportingly be used for dry brown coal, its thermal efficiency will improve 5 percentage points at least; Per kilogram hydro-thermal consumption index will reduce 50kcal/kgH at least ₂The heat of O, the primary drying dehydration rate can reach 69.18-83.7, and the brown coal moisture after the baking needs by the user, can be reduced to fully in the 6-8% scope, and baking back coal upgrading rate can reach 45.39-92.08%, is fit to very much the big production needs of industrialization, scale.Adopt this heat energy apparatus to remove dry brown coal, not only improved the security of dry run with the superheated steam of used heat gas preparation, and with the direct granulating and forming of brown coal after drying by the fire, the product qualification rate improves, without post bake, also need not add adhesive, have characteristics energy-conservation, that lower consumption, reduce discharging.Brown coal after the oven dry substitute bituminous coal and anthracite because calorific value is raised, and range of application is more extensive, can also substitute anthracite directly as industrial chemicals coal, thermal coal, reduce the spontaneous combustion probability, reduce cost of transportation.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.

Fig. 2 is the cutaway view of Fig. 1 along the A-A line.

Fig. 3 is a kind of process chart that is applied to the brown coal drying and dehydrating upgrading of the present utility model.

Sequence number explanation among the figure: 1 partition wall, 2 times independent body smoke boxes, 3 useless exhanst gas outlets, 4 collar tie beams, 5 collecting and distributing covers, 6 used heat gas imports, 7 bundled tube heat and mass exchangers, 8 manholes, 9 ends envelope, disjunctor smoke box on 10,11 low-temperature heat exchange districts, warm heat transfer zone in 12,13 every shrouding, 14 arch form flues, 15 gas approach, independent body smoke box on 16,17 flue brace summers, 18 high temperature heat transfer zone, the outlet of 19 superheated steams, 20 assemble cover, 21 built-in fittings, 22 times disjunctor smoke boxes, 23 lintels, 24 pedestals, 25 lower perforated plates, 26 heat insulation walls, 27 upper perforated plates, 28 high heat preserving and insulating materials, 29 exterior panels, 30 inside panels, 31 hot-blast stoves, a 32 difference tubular type gas separator, 33 dedusters, 34 sensing detection elements, 35 used heat gases, 36 blower fans, 37 cylinder drying machines, 38 superheated steams, 39 temperature sensors, 40 heat energy apparatus.

The specific embodiment

Describe concrete structure of the present utility model in detail according to Fig. 1～3.The heat energy apparatus 40 of these usefulness used heat gas 35 preparation superheated steams 38 comprises: the pedestal 24 that partition wall 1 is set, the following independent body smoke box 2 that has useless exhanst gas outlet 3, following disjunctor smoke box 22, be fixed on the heat exchange portion of pedestal 24 tops, the last independent body smoke box 16 of gas approach 15 and arch form flue 14 is set, last disjunctor smoke box 10 parts such as grade.Low-temperature heat exchange district 11, middle temperature heat transfer zone 12 and the high temperature heat transfer zone 18 that is made of bundled tube heat and mass exchanger 7 wherein is set between the two sides heat insulation wall 26 of heat exchange portion.Heat insulation wall 26 is to be made of inside panel 30, exterior panel 29 and the high heat preserving and insulating material 28 that is laid on 30,29 of inside and outside wallboards.The specification of inside panel 30, exterior panel 29 and used sheet material should be according to actual needs with may select.

Last independent body smoke box 16 reaches upward, and disjunctor smoke box 10 is formed by the heat insulation wall of semi-cylindrical shaped heat insulation wall and two side ends envelope 9 and upper perforated plate 27 encapsulation of bundled tube heat and mass exchanger 7 respectively.The heat insulation wall 26 of the semi-cylindrical shaped heat insulation wall 26 of last independent body smoke box 16 and last disjunctor smoke box 10 and end envelope 9 is identical with two sides heat insulation wall 26 structures of heat exchange portion, all is to be made of inside panel 30, exterior panel 29 and the high heat preserving and insulating material 28 that is laid on 30,29 of inside and outside wallboards.Following independent body smoke box 2 reaches down, and disjunctor smoke box 22 is formed by lower perforated plate 25 encapsulation of pedestal 24 inner chambers that partition wall 1 is set and the concrete collar tie beam 4 that has built-in fitting 21, lintel 23 and bundled tube heat and mass exchanger 7 respectively.When heat energy apparatus 40 was mini-plant, disjunctor smoke box 22 can adopt full steel structure under following independent body smoke box 2 reached.Following independent body smoke box 2 is flue gas passing aways of cooling, has the further sedimentation of micronic dust and compiles function.

For easy to maintenance, on the heat insulation wall 26 of the end envelope 9 of last independent body smoke box and last disjunctor smoke box 10, manhole 8 is set, the side of two cavitys of following independent body smoke box 2 and following disjunctor smoke box 22 also is respectively equipped with the hurdle and repaiies manhole 8.Manhole 8 is for maintainer reservation hole that come in and go out and that have seal cover.Every shrouding 13 is to connect the structural slab of going up independent body smoke box 16, going up disjunctor smoke box 10 ends envelope 9, has connection effect and sealing function, plays the effect that maintenance is convenient, be easy to load and unload simultaneously.

Bundled tube heat and mass exchanger 7 is that 35 distillations of low-temperature waste heat gas are the key equipment of superheated steam 38, is the important place of high-temperature flue gas and 35 caloic transmission of low-temperature waste heat gas and exchange.Parallel staggered tube bank between its upper and lower tube sheet 27,25, adopt parallel vertically distribution and staggered logical heart steel pipe of arranging, and the pore that passes upper and lower tube sheet 27,25 respectively carries out the end sealing-in, makes the upper and lower separately perforation of tube chamber of the top and bottom of bundled tube heat and mass exchanger 7.The vegetables of the tube bank permutation and combination of bundled tube caloic heater 7 are close, should be according to the height settings of its output temperature, and the temperature height of tube bank output is then arranged for the close formula of putting, and the temperature of tube bank output is low, then puts formula for vegetables and arranges.The diameter of tube bank should be selected φ 20-60mm tubing for use, and material can adopt stainless steel tube, copper pipe, also can adopt steel pipe, also can adopt tubing such as ratio-frequency welding adapter as required.The material of upper and lower tube sheet 27,25 can adopt 16Mn sheet material or Q235 sheet material, and its thickness is preferably 10-30mm.

The inner chamber of last independent body smoke box 16 is communicated with the tube chamber at bundled tube heat and mass exchanger 7 tops of high temperature heat transfer zone 18; The tube chamber of bundled tube heat and mass exchanger 7 bottoms of high temperature heat transfer zone 18 is by the tube chamber of bundled tube heat and mass exchanger 7 bottoms of warm heat transfer zone 12 during disjunctor smoke box 22 is communicated with down; In the tube chamber at bundled tube heat and mass exchanger 7 tops of warm heat transfer zone 12 be communicated with the tube chamber at bundled tube heat and mass exchanger 7 tops in low-temperature heat exchange districts 11 by last disjunctor smoke box 10; The tube chamber of bundled tube heat and mass exchanger 7 bottoms in low-temperature heat exchange district 11 is communicated with the inner chamber of following independent body smoke box 2.Parallel staggered tube bank gap between the upper and lower tube sheet 27,25 of the bundled tube heat and mass exchanger 7 of the low-temperature heat exchange district 11 of heat exchange portion, middle temperature heat transfer zone 12, high temperature heat transfer zone 18 forms connected chamber.High-temperature flue gas is entered in the independent body smoke box 16 by the gas approach 15 of baking type flue 14, again successively along the tube chamber heat exchange of the upper and lower perforation of the bundled tube heat and mass exchanger 7 of high, medium and low temperature heat transfer zone 18,12,11, following disjunctor smoke box 22 through being communicated with, last disjunctor smoke box 10 are turned back, and the flue gas of cooling is from useless exhanst gas outlet 4 discharges of independent body smoke box 2 down.

The outer end of the connected chamber in low-temperature heat exchange district 11 is connected used heat gas carrier pipe (not shown) by collecting and distributing cover 5 with used heat gas import 6, the outer end of the connected chamber of high temperature heat transfer zone 18 is connected superheated steam supply pipe (not shown) by assembling cover 20 with superheated steam outlet 19.Low-temperature waste heat gas 35 is transformed into hyperthermia and superheating steam and flows to the superheated steam supply pipe by superheated steam outlet 19 from the connected chamber heat exchange that the used heat gas import 6 parallel staggered tube bank gap between the upper and lower tube sheet 27,25 of the bundled tube heat and mass exchanger 7 of high, medium and low temperature heat transfer zone 18,12,11 successively forms.Above-mentioned high-temperature flue gas and low-temperature waste heat gas 35 are respectively by passage antikinesis separately, can realize that fully caloic fully exchanges, the waste resource recycling.

It is as follows that the utility model is applied to the idiographic flow (shown in Figure 3) of brown coal drying and dehydrating process for upgrading:

Heat energy apparatus 40 of the present utility model is when initial operating stage starts, at first adopt the air of tightly sealing up for safekeeping in flow sheet equipment to make heat transferring medium, treat that cylinder drying machine 37 enters normal condition, output used heat gas 35 replaces air is gradually made heat transferring medium, can enter the process with used heat gas 35 preparation superheated steams 38.And then selection miscellaneous equipment: promptly

Employing provides the hot-blast stove 31 of high-temperature flue gas, for heat energy apparatus 40 provides thermal source, hot-blast stove 31 can adopt traveling-grate stoker hot-blast stove, fluidized bed type fluidized bed furnace and whirlwind coal-powder boiler, can also adopt gas furnace or oil burner, the any stove of concrete employing is then decided on local condition.Cylinder drying machine 37 can be selected drying equipment of the inventor's " double return journey barrel type drying machines ", " three return journey barrel type drying machines " and " many backhauls cylinder type brown coal drying and upgrading device " or other kind etc.Being configured in the temperature sensor 39 that detects of superheated steam 38 temperature to input of cylinder drying machine 37 front portions, is the common component that preparation superheated steam 38 processes detect; Be configured in the sensing detection element 34 in used heat gas 35 exits of cylinder drying machine 37 outputs, be mainly used in the detection of temperature and humidity pressure signal is read.The control system that temperature sensor 39 and sensing detection element 34 are drying technology process provides the parameter foundation, so that realize automation control.Deduster 33 adopts can be with the used heat gas 35 of cylinder drying machine 37 outputs, and the part dust of taking away under the motion state condition carries out sedimentation, the common equipment that used heat gas 35 is purified.Can be up according to high temperature low humidity gas, principle that the low temperature and high relative humidity gas is descending, adopt the difference position formula gas separator 32 of volume tubular type difference position isolating construction, make the purification used heat gas 35 of suction carry out vapour, water natural separation, unnecessary low temperature and high relative humidity gas is discharged outside the machine automatically, and no sewage produces; Standby isolated high temperature low humidity gas through blower fan 36 input used heat gas carrier pipes.The recovery of the used heat gas 35 of output and be transformed into the blower fan common commonly used that the superheated steam of high temperature is carried when this blower fan 36 adopts and realizes that cylinder drying machines 37 enter normal condition through heat exchange.

When normally utilizing used heat gas 35 preparation superheated steams 38 dry brown coal, utilize 700-850 ℃ high-temperature flue gas of hot-blast stove 31 outputs, gas approach 15 through baking type flue 14 enters in the cavity of independent body smoke box 16, (adopt common Y series blower fan at smoke suction machine, be the equipment that hot-blast stove 31 must dispose, not shown) high-temperature flue gas is descending along the tube chamber of bundled tube heat and mass exchanger 7 tube banks of high temperature heat transfer zone 18 down in effect, in following disjunctor smoke box 22 cavitys, meet partition wall 1 turn back along in the tube chamber of bundled tube heat and mass exchanger 7 tube banks of warm heat transfer zone 12 up, the tube chamber of bundled tube heat and mass exchanger 7 tube banks by the low-temperature heat exchange district 11 that is communicated with last disjunctor smoke box 10 comes downwards to down the inner chamber of independent body smoke box 2 again, like this high-temperature flue gas through three backhauls turn back the operation the heat transmission, cigarette temperature to useless exhanst gas outlet 3 drops to 110-130 ℃ very soon, and the flue gas of lowering the temperature under the effect of smoke suction machine is from useless exhanst gas outlet 3 emptyings of independent body smoke box 2 down.Meanwhile, the used heat gas 35 of output was after deduster 33 and formula gas separator 32 purifications of difference position when cylinder drying machine 37 entered normal condition, through blower fan 36 input used heat gas carrier pipes, again from the used heat gas import 6 interbank connected chamber heat exchange between the upper and lower tube sheet 27,25 of the bundled tube heat and mass exchanger 7 of high, medium and low temperature heat transfer zone 18,12,11 successively, be transformed into hyperthermia and superheating steam 38 and flow to the superheated steam supply pipe, as the dry brown coal of the thermal source of cylinder drying machine 37 by superheated steam outlet 19.The temperature-rise period of its used heat gas 35 is 110-130 ℃ by inlet temperature, the heat exchange of the tube bank of three groups of bundled tube heat and mass exchangers 7 of the high, medium and low temperature heat transfer zone 18,12,11 of process, be elevated to 350-450 ℃ or higher very soon, make the used heat gas 35 of low-temperature saturated steam be transformed into hyperthermia and superheating steam 38, thereby reach the purpose of waste resource recycling.

Claims (6)

1. heat energy apparatus with preparing superheated steam with waste heat steam, comprise partition wall is set, the following independent body smoke box that has useless exhanst gas outlet reaches the pedestal of disjunctor smoke box down, be fixed on the heat exchange portion of pedestal top, the last independent body smoke box of gas approach and arch form flue is set and goes up the disjunctor smoke box, it is characterized in that: the low-temperature heat exchange district that is made of the bundled tube heat and mass exchanger is set between the two sides heat insulation wall of described heat exchange portion, in warm heat transfer zone and high temperature heat transfer zone, the described inner chamber of going up the independent body smoke box is communicated with the tube chamber at the bundled tube heat and mass exchanger top of described high temperature heat transfer zone, the tube chamber of the bundled tube heat and mass exchanger of described high temperature heat transfer zone bottom by disjunctor smoke box down be communicated with described in the tube chamber of bundled tube heat and mass exchanger bottom of warm heat transfer zone, the tube chamber at the bundled tube heat and mass exchanger top of warm heat transfer zone is communicated with the tube chamber at the bundled tube heat and mass exchanger top in low-temperature heat exchange district in described by last disjunctor smoke box, the tube chamber of the bundled tube heat and mass exchanger bottom in low-temperature heat exchange district is communicated with the inner chamber of following independent body smoke box, described heat exchange portion low, in, on the described bundled tube heat and mass exchanger of high temperature heat transfer zone, parallel staggered tube bank gap between the lower perforated plate forms connected chamber, import is connected used heat gas carrier pipe with the used heat gas by collecting and distributing cover in the outer end of the connected chamber in described low-temperature heat exchange district, and outlet is connected the superheated steam supply pipe with superheated steam by assembling cover in the outer end of the connected chamber of described high temperature heat transfer zone.

2. the heat energy apparatus with preparing superheated steam with waste heat steam according to claim 1 is characterized in that: the two sides heat insulation wall of described heat exchange portion is to be made of internal layer wallboard, outer colored steel and the high heat preserving and insulating material that is laid on inside and outside interlayer.

3. the heat energy apparatus with preparing superheated steam with waste heat steam according to claim 1 is characterized in that: described go up the independent body smoke box and go up the disjunctor smoke box encapsulate by the upper perforated plate of the end envelope heat insulation wall of semi-cylindrical shaped heat insulation wall and both sides and described bundled tube heat and mass exchanger respectively and form.

4. the heat energy apparatus with preparing superheated steam with waste heat steam according to claim 3 is characterized in that: it is to be made of inside panel, exterior panel and the high heat preserving and insulating material that is laid between inside and outside wallboard that the described semi-cylindrical shaped heat insulation wall of going up independent body smoke box and last disjunctor smoke box and end seal heat insulation wall.

5. the heat energy apparatus with preparing superheated steam with waste heat steam according to claim 1 is characterized in that: described independent body smoke box down and down the disjunctor smoke box form by pedestal inner chamber that partition wall is set and the lower perforated plate encapsulation that has concrete collar tie beam, lintel and a described bundled tube heat and mass exchanger of built-in fitting respectively.

6. the heat energy apparatus with preparing superheated steam with waste heat steam according to claim 1, it is characterized in that: parallel vertically distribution and staggered logical heart steel pipe of arranging are adopted in the parallel staggered tube bank between the upper and lower tube sheet of described bundled tube heat and mass exchanger, and the pore that passes upper and lower tube sheet respectively carries out the end sealing-in, makes the upper and lower perforation of tube chamber of the top and bottom of described bundled tube heat and mass exchanger.

Images